just bought a zex wet nitrous kit today & was reading through it & it said do not use if u have aftermarket chips or ecus without using an ignition with timing retard . i have a 12.1 compression b16 forged pistons, eagle rods, blockguard, 340cc injectors, 255lph fuel pump hondata s200 & all bolt ons. would it be okay to spray a 65 shot without using the msd ignition with timing retard

 

u will be fine, but i would turn the distributor back about 4 degrees retarded if i were u (im assuming who ever tuned the hondata program advanced the timing a bit)

 

about how much will i need to move it for this ive have never adjusted the timing using the distributor